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use v6;
use Test;
# L<S32::Containers/"List"/"=item categorize">
plan 4;
{
# Subroutine form, code block mapper
my %got = categorize { $_ - ($_ % 10) }, 29, 7, 12, 9, 18, 23, 3, 7;
my %expected = ('0'=>[7, 9, 3, 7], '10'=>[12, 18], '20'=>[29, 23]);
is_deeply(%got, %expected, 'sub with code block mapper'); # test 1
}
{
# Subroutine form, named sub mapper
sub suit($card) { $card.comb.pop }
my %got = categorize &suit, <A♣ 10♣ 6♥ 3♦ A♠ 3♣ K♠ J♥ 6♦ Q♠ K♥ 8♦ 5♠>;
my %expected = ('' => ['A♠', 'K♠', 'Q♠', '5♠'],
'' => ['A♣', '10♣', '3♣'],
'' => ['6♥', 'J♥', 'K♥'],
'' => ['3♦', '6♦', '8♦']);
is_deeply(%got, %expected, 'sub with named sub mapper'); # test 2
}
{
# Method form, code block mapper
my %got = (1...6).categorize: {
my @categories = ( $_ % 2 ?? 'odd' !! 'even');
unless $_ % 3 { push @categories, 'triple'}
@categories;
};
my %expected = ('odd'=>[1,3,5], 'even'=>[2,4,6], 'triple'=>[3,6]);
is_deeply(%got, %expected, 'method with code block mapper'); # test 3
}
{
# Method form, named sub mapper
sub charmapper($c) {
my @categories;
push @categories, 'perlish' if $c.lc ~~ /<[perl]>/;
push @categories, 'vowel' if $c.lc eq any <a e i o u>;
push @categories, ($c ~~ .uc) ?? 'uppercase' !! 'lowercase';
@categories;
}
my %got = 'Padre'.comb.categorize(&charmapper);
my %expected = ( 'perlish' => ['P', 'r', 'e'],
'vowel' => ['a', 'e'],
'uppercase' => ['P'],
'lowercase' => ['a', 'd', 'r', 'e'] );
is_deeply(%got, %expected, 'method with named sub mapper'); # test 4
}
# vim: ft=perl6
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